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Stellar Sea Lion Bull on Haul Out

The Alaska Ecosystems Program conducts research on Steller sea lions and northern fur seals. Research projects are designed to assess the status of these species under the ESA and MMPA and to improve knowledge of their ecology and behavior.  In addition, research on these species is directed at gaining a better understanding of the role that these species play in the Bering Sea and Gulf of Alaska ecosystems in order to provide advice for management of human activites that may affect the conservation and recovery of these species. 

Program Leader: Tom Gelatt

Recent Reports, Publications, and Posters

Recent Cruises & Projects


Dr. Tom Gelatt explains how NOAA Fisheries scientists are working to
protect and study threatened Steller sea lions.

Quarterly Reports Publications
  • FRITZ, L. W., R. TOWELL, T. S. GELATT, D. S. JOHNSON, and T. R. LOUGHLIN. 2014. Recent increases in survival of western Steller sea lions in Alaska and implications for recovery. Endang. Species Res. 26:13-24. (.pdf, 1.11 MB).  Online.
     
  • McCLINTOCK, B., D. JOHNSON, M. HOOTEN, J. Ver HOEF, and J. MORALES. 2014. When to be discrete: the importance of time formulation in understanding animal movement. Movement Ecol. 2(21):1-14. (.pdf, 1.18 MB).  Online.
     
  • McCLINTOCK, B. T., J. M. HILL, L. FRITZ, K. CHUMBLEY, K. LUXA, and D. R. DIEFENBACH. 2014. Mark-resight abundance estimation under incomplete identification of marked individuals. Methods Ecol. Evol. 5:1294-1304. 
     
  • LANG, A. R., J. CALAMBOKIDIS, J. SCORDINO, V. L. PEASE, A. KLIMEK, V. N. BURKANOV, P. GEARIN, D. I. LITOVKA, K. M. ROBERTSON, B. R. MATE, J. K. JACOBSEN, and B. L. TAYLOR. 2014. Assessment of genetic structure among eastern North Pacific gray whales on their feeding grounds. Mar. Mammal Sci. 30:1473-1493. 
     
  • KUHN, C. E., R. R. REAM, J. T. STERLING, J. R. THOMASON, and R. G. TOWELL. 2014. Spatial segregation and the influence of habitat on the foraging behavior of northern fur seals (Callorhinus ursinus). Can. J. Zool. 92:861-873.  
     
  • KUHN, C. E., and D. P. COSTA. 2014. Interannual variation in the at-sea behavior of California sea lions (Zalophus californianus). Mar. Mammal Sci. 30:1297-1319. 
     
  • JOHNSON, D. S., and L. FRITZ. 2014. agTrend: a Bayesian approach for estimating trends of aggregated abundance. Methods Ecol. Evol. 5:1110-1115.  
     
  • DUNCAN, C., B. DICKERSON, K. PABILONIA, A. MILLER, and T. GELATT. 2014. Prevalence of Coxiella burnetii and Brucella spp. in tissues from subsistence harvested northern fur seals (Callorhinus ursinus) of St. Paul Island, Alaska. Acta Vet. Scand. 56:67. (.pdf, 419 KB).  Online.
     
  • Additional recent Alaska Ecosystems Program publications


Posters
  • Stable Isotope Model Predicts Foraging Habitat of Northern Fur Seals (Callorhinus ursinus) in Alaska
    By:  T. K. ZEPPELIN, D. S. JOHNSON, C. E. KUHN, S. J. IVERSON, R. R. REAM
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2015
    (2015 poster, .pdf, 6.13 MB)   Online.

     
  • Linking Northern Fur Seal Behavior with Prey Distributions: the Impact of Temporal Mismatch Between Predator and Prey Surveys
    By:  CAREY KUHN
    Conference:  Bio-logging Science Symposium (5th International), Strasbourg, France, Sept 2014
    (2014 poster, .pdf, 10.5 MB)   Online.

     
  • Development and Field Testing a Satellite-linked Fluorometer for Marine Mammals: Shedding Light on the Unknown
    By:  MICHELLE LANDER, MELINDA HOLLAND, TODD LINDSTROM, ALBERT FRANZHEIM, MATTHEW RUTISHAUSER, ROGER HILL
    Conference:  Bio-logging Science Symposium (5th International), Strasbourg, France, Sept 2014
    (2014 poster, .pdf, 2.33 MB)   Online.

     
  • Development and Field Testing a Satellite-linked Fluorometer for Marine Mammals: Shedding Light on the Unknown (Phase II)
    By:  MICHELLE LANDER, MELINDA HOLLAND, TODD LINDSTROM, ALBERT FRANZHEIM, MATTHEW RUTISHAUSER, ROGER HILL
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 60.6 MB (** Note large file size **))   Online.

     
  • Re-examining Habitat Segregation and Foraging Effort of Northern Fur Seals After 15 Years of Decline
    By:  CAREY KUHN, JEREMY STERLING, ROLF REAM
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 3.76 MB)   Online.

     
  • Steller Sea Lion Diet and Population Trends in the Aleutian Islands
    By:  LOWELL FRITZ, DOMINIC TOLLIT, EDWARD LAMAN, KRISTI MILLER, ANGELA SCHULZE, JAMES THOMASON, WILLIAM WALKER, TONYA ZEPPELIN, THOMAS GELATT
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, n-011, n-042, n-017)   Online.

     
  • Steller Sea Lion Decline at Medny Island Rookery, Russia, in Summer 2013
    By:  VLADIMIR BURKANOV, ANNA KIRILLOVA, EVGENY MAMAEV, SERGEY RYAZANOV, THOMAS GELATT
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 2.84 MB)   Online.

     
  • Apparent Age of First Reproduction in Steller Sea Lions on Russian Rookeries
    By:  VLADIMIR BURKANOV, ALEXEY V. ALTUKHOV, RUSSEL ANDREWS, EVGENY G. MAMAEV, VICTOR NIKULIN, PETER A. PERMYAKOV, SERGEY D. RYAZANOV, VLADIMIR V. VERTYANKIN, DONALD G. CALKINS, THOMAS R. LOUGHLIN, THOMAS GELATT
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 3.16 MB)   Online.

     
  • Additional recent Alaska Ecosystems Program poster presentations



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